What is fermentation, Biology

Assignment Help:

What is Fermentation ?

Fermentation is a process used by anaerobic organisms and certain cells of aerobic organisms, such as muscle cells deprived of oxygen, to obtain additional energy from the glycolytic pathway. In other words, if there is no oxygen to accept electrons at the end of the electron transport system, all of the NAD available will be bound in reduced form, and cells must turn to glycolysis to supply ATP. As you have learned, glycolysis requires NAD+, in order to oxidize (remove electrons from) G3P to form 3PG. Oxidizing G3P forms NADH + H+. NAD+ must then be regenerated to allow glycolysis to continue.

In one type of fermentation, NADH + H+ reduce pyruvate to form either lactic acid or ethanol, depending upon the organism, plus NAD+. This regenerates NAD+, allowing glycolysis to continue. Lactic acid is the end point in overused muscle tissue; ethanol (ethyl alcohol) during fermentation of beer or wine. The reactions are as follows:

Pyruvate +  NADH + H+→lactic acid + NAD+

or

Pyruvate + NADH + H+→ ethanol + CO2 + NAD+

 

 


Related Discussions:- What is fermentation

Which is structural isomers, Structural isomers: Select one: a. Have ...

Structural isomers: Select one: a. Have the same molecular weight b. Have the same connectivity c. Are mirror images d. All of the above e. None of the above

How are cnidarian characterized, Q. Cnidarian identity card. How are they c...

Q. Cnidarian identity card. How are they characterized according to instance of representing beings, basic morphology, kind of symmetry, germ layers and coelom, digestive system, r

Microbiology, general characteristics of cynobacteria

general characteristics of cynobacteria

What is multiple alleles , What is Multiple Alleles ? Obviously, diploi...

What is Multiple Alleles ? Obviously, diploid organisms, such as humans can have only two different alleles for a certain gene locus. However, new alleles are continuously bein

Explain normal nutrition - a base of therapeutic diet, Normal nutrition: a ...

Normal nutrition: a base of therapeutic diet Normal nutrition is the foundation upon which the  therapeutic modifications are based. The primary principle of diet nutrition the

Explain the cultural practices of single crop, Explain the Cultural Practic...

Explain the Cultural Practices of single crop Continuous cultivation of a single crop over years on the same site causes accumulation of a particular group of microbes, which d

Diagram, #questioi want clarius diagramn..

#questioi want clarius diagramn..

Explain the torsional failure - root canal test, Explain the Torsional Fail...

Explain the Torsional Failure - Root Canal Test a. Occurs when the tip of the rotating instrument blinds (locked) in the canal while the motor continues to rotate the shank of

Describe methanogen archaebacteria and thermoacidophile, Q What are halophi...

Q What are halophile, methanogen archaebacteria and thermoacidophile? There are three peculiar types of archaebacteria the halophile archaebacteria only survive in salt-rich en

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd